A swift rise in bond yields in 2018 has sent fixed-income investors scrambling, with major categories of bond exchange traded funds seeing steep outflows, while other groups have found favor, MarketWatchreports.

While flows into bond products remain positive overall — extending a decadelong rotation into fixed income from stocks — investors have retreated from notable categories, a sign they believe yields could continue rising, which would mean further dterioration in the funds, as prices and yields move inversely to each other.